furthest: P. and V. ἔσχατος.
extreme: P. and V. ἔσχατος, τελευταῖος; see extreme.
very great: P. and V. μέγιστος, V. ὑπέρτατος.
to the utmost: P. εἰς τὸ ἔσχατον, V. εἰς τοὔσχατον.